Grower’s Edge Block Cover 4″ – 40-Pack
These handy Grower's Edge Block covers block light from reaching your rockwool or other growing media, helping to prevent algae growth. Simply place the white side up to reflect light and use a toothpick (not included) to secure the cover. With a convenient 40-pack, you'll have everything you need to promote healthy root growth for your indoor plants.
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Grower ‘s Edge Block Cover 4 ” – 40-Pack
For blocks of rockwool and other grow media. These Grower ‘s Edge Block Covers blocks light from media—which helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1/2 inch in diameter.
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